Hammarlund HQ-170C Communications Receiver (1958)
I got this Hammarlund HQ-170C radio as part of a package
when I bought my HQ-160.
Since I don't listen to ham radio, I eventually
sold it and used the money to buy a Hallicrafters SX-42.
This set was complete, original, and sparkling clean,
although cosmetically not quite as spiffy as my other two
Hammarlunds. Two of its knobs were not original, as you can see in
the photo. It had some minor scratches in the paint, and some
pinpoint rust on the cabinet face. The dinky knob was also
missing from the clock, a curse that afflicts many clock radios.
The HQ-170 has seventeen tubes. Here's the lineup.
Tube |
Function |
6BZ6 |
RF
Amplifier |
6BE6 |
First mixer |
6C4 |
HF
Oscillator |
6BE6 |
Second mixer, Crystal controlled oscillator |
6BA6 |
First IF
Amplifier |
6BE6 |
Third mixer,
Variable oscillator |
6BA6 |
Second IF
Amplifier |
6BA6 |
Third IF
Amplifier |
6BV8 |
Fourth IF amplifier,
Detector, AVC |
12AU7 |
Product
Detector |
6AL5 |
Noise
Limiter |
12AU7 |
BFO, Meter
amplifier |
6AV6 |
First audio,
AVC clamp |
6BZ6 |
Calibrator
|
6AQ5 |
Audio
Out |
0B2 |
Voltage
Regulator |
5U4 |
Rectifier
|
This was not a cheap radio when new. It sold for $359,
about the same price as the HQ-160. Not much money
for today's gear, but $359 went a long way in the
late 1950s.
|